Explain Student t distribution & F distribution?

How do U.S. residents who travel overseas for leisure differ from those who travel for business? The following table shows the breakdown by occupation. Leisure Business Occupation Explain why we can, or cannot, use a chi-square test to travelers (%) travelers (%) learn whether these two distributions differ significantly. Professional/technical 36 39 O We cannot use a chi-square test with these data Manager/executive 23 48 because we do not have the actual counts of the Retired 14 3 travelers in each category. We also do not know if the sample was taken randomly or if the samples are independent. O We can use a chi-square test with these data because Student 7 Other 20 7 Total 100 100 we do have the actual proportion of the travelers in each category. We cannot use a chi-square test with these data because while we have the actual counts of the travelers in each category, we do not know if the sample was taken randomly or if the samples are independent. We can use a chi-square test…

The predictive distribution pynewy) for a new observation Ynew takes into account the posterior uncertainty of the parameters. True False

When should a s distribution be used? When there are how many cases in a sample? When should a t distribution be used? When there are how many cases in a sample?

How does the shape of a t-distribution compare with the normal distribution? How does the shape of a t-distribution depend on sample size?

Based on the Histogram describe the distribution of the variable WPM is it symmetric, skewed left, skewed right, bimodal, uniform, or random.

A dog walker walks 16 dogs on average per month a month is randomly Chosen what is the distribution of x